hi! your voice is adorable! just some tips, though. i am pretty much tone-deaf myself so it might not be in my position to say this, but i guess working out on some off notes here and there might be good, too!

from your hello/how are you cover the intro "hello~" sounded a bit off, so i guess starting from there you can improve your singing! taking retakes are very okay and it'll definitely help you improve a lot! it is a better option, tuning is just a last resort. taking retakes make you really improve a lot! timing can also be improved a little bit! it adds more flow and rhythm to the music, that's why c :

for mixing, since i can guess that most of your covers are in english? if it is, mixing and making your words clearer is more important! usually some mix makes the english words the vocalist/s are singing sound so vague and as if they're eating their own words. so i guess you need to be careful of that, too! amplifying your vocals also could be done, since it somehow sounded as if the off vocal is trying to overtake the main vocals! :' D

let's all improve together, yay! && keep singing o u <)b

Last edited by Aerlith on Mon Jun 29, 2015 11:41 am; edited 1 time in total (Reason for editing : +3 for unrequested intermediate feedback.)

To add slightly add to Rei's suggestions, I wanted to say that when I'm having trouble tuning something, I match it an on-vocal version of the song I'm covering, play both at the same time, and listen for the discord. I don't know if that helps at all, sorry!